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History of Radio

By JR_Johnson

  • Marconi

    Marconi
    Italian inventor and scientist. Marconi was the first to build a radio that was able to send and recieve signals. Used morse code

  • AM

    AM
    Amplitude modulation.
    This form of broadcast had a smaller frequency and more interference.
    The first transmission was by Canadian researcher Reginald Fessendon

  • The audion tube

    The audion tube
    1906 - Lee De Dorest creates the audion tube. A vacuum tube that amplifies signals.
    Disputed that that the idea was first made by Canadian inventor Reginald Fessenden.

  • The Titanic

    The Titanic
    The radio saves the lives of titanic survivors. Informing the mainland of the ship sinking.

  • KDKA Radio

    KDKA Radio
    The first commercial broadcasting station in the world.

  • First National Broadcast

    First National Broadcast
    KDKA does the first national broadcast. The station gives live commentary over a boxing match. Jack Dempsey vs. Georges Carpentier

  • FM

    FM
    Edwin Armstrong patents the FM radio.
    FM allowed transmission and reception of broader range of audio frequencies with clearer sound.

  • Televisor

    Televisor
    precursor of television.
    The introduction of television lead to a drastic drop in the popularity and utility of the radio for commercial use.

  • Radio Act of 1927 and FRC (Federal Radio Commission)

    Radio Act of 1927 and FRC (Federal Radio Commission)
    The Radio act: Formed FRC to Organized licensing of transmitters and assigned station frequencies and call letters.

  • The Great Depression

    The Great Depression
    Radio provided an escape to people suffering during the economic decline.

  • Federal Communications act of 1934

    Federal Communications act of 1934
    Creates FCC to replace FRC. Made it so people could access better quality interstate and global broadcasts